Hartog Ritmeester married Rebecca Groen in 1916 in Amsterdam. She passed away in 1932. They had eight children.
Stadsarchief Amsterdam, archiefkaart Hartog Ritmeester
In addition, Jokos files (numbers 60302, 60750) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.